US PATENT SUBCLASS 205 / 680
.~.~.~ More than 20 weight percent of one or more phosphoric acids

Current as of: June, 1999
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205 /   HD   ELECTROLYSIS: PROCESSES, COMPOSITIONS USED THEREIN, AND METHODS OF PREPARING THE COMPOSITIONS

640  DF  ELECTROLYTIC EROSION OF A WORKPIECE FOR SHAPE OR SURFACE CHANGE (E.G., ETCHING, POLISHING, ETC.) (PROCESS AND ELECTROLYTE COMPOSITION) {19}
674  DF  .~ Electrolyte composition or defined electrolyte {6}
675  DF  .~.~ Less than 50 weight percent water {3}
680.~.~.~ More than 20 weight percent of one or more phosphoric acids

DEFINITION

Classification: 205/680

More than 20 weight percent of one or more phosphoric acids:

(under subclass 675) Subject matter in which more than 20 percent by weight of the electrolyte is made up of one or more phosphoric acids (e.g., orthophosphoric acid, metaphosphoric acid, polyphosphoric acid, etc.).

SEE OR SEARCH THIS CLASS, SUBCLASS:

677, for an electrolyte containing one or more phosphoric

acids and more than 20 percent by weight organic material.

682, for an aqueous-base electrolyte containing phosphorous.